133424340 has 96 divisors (see below), whose sum is σ = 428488704. Its totient is φ = 30387840.

The previous prime is 133424339. The next prime is 133424351. The reversal of 133424340 is 43424331.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 133424340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205897 + ... + 206543.

It is an arithmetic number, because the mean of its divisors is an integer number (4463424).

Almost surely, 2^133424340 is an apocalyptic number.

133424340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133424340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214244352).

133424340 is an abundant number, since it is smaller than the sum of its proper divisors (295064364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133424340 is a wasteful number, since it uses less digits than its factorization.

133424340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 133424340 is about 11550.9454158523. The cubic root of 133424340 is about 510.9891606061.

Adding to 133424340 its reverse (43424331), we get a palindrome (176848671).

Subtracting from 133424340 its reverse (43424331), we obtain a palindrome (90000009).

The spelling of 133424340 in words is "one hundred thirty-three million, four hundred twenty-four thousand, three hundred forty".